This article covers towns, weather stations and permanent military bases that are farther south than latitude 45°S. Unlike the northern hemisphere, where several major metropolitan areas such as Moscow, Harbin, London, Paris, Seattle, and Montreal are all located north of the 45°N parallel, the only permanently populated areas south of the 45°S parallel are the small and sparsely populated regions of southern Patagonia in South America, the Falkland Islands, and the southernmost tip of New Zealand.
Southernmost city
The southernmost city in the world is mainly a slogan used for tourism purposes to attract visitors to a city as well as the tourists headed for Antarctica. Ciudad (city) is not a legal designation in Chile and Argentina, except for the Autonomous City of Buenos Aires. Currently, three places use this slogan: Ushuaia in Argentina as well as Punta Arenas and Puerto Williams in Chile, with the last being the absolute southernmost town by latitude. There are several more settlements further south but none are considered to be large enough to be classified as a 'city'. The three contending cities are from north to south:
Ushuaia (54°48′S68°18′W / 54.800°S 68.300°W / -54.800; -68.300, population: 82,615), the capital of the Argentine province of Tierra del Fuego, is more commonly regarded as the southernmost city in the world due to its sufficiently large population, its infrastructure, and its accepted classification as a city. Ushuaia is located in a wide bay on the southern coast of the island of Tierra del Fuego, on the northern shore of the Beagle Channel; hence, it is further north than Puerto Williams.
Puerto Williams' "Beyond the End of the World" sign
The southernmost city with a population of over one million is Melbourne, Australia. However, this city is not further south than 45 degrees, instead located around 37°48' south
Settlements of more than 1,000 inhabitants south of 45°S
There are many research stations in Antarctica, both permanent and summer only. Many of the stations are staffed all year. McMurdo Station is the largest with an average population of 1200.
A total of 30 countries (as of October 2006), all signatory to the Antarctic Treaty, operate seasonal (summer) or year-round research stations on the continent and on its surrounding islands. In addition to these permanent stations, approximately 30 field camps are established each austral summer to support specific one-off projects.